System and method of multidimensional query results processing

Inactive Publication Date: 2005-01-13
IBM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

It is an object of the present invention to sol

Problems solved by technology

Processing OLAP data locally to provide the data for a particular report introduces several less than ideal side effects, including: the aggregation capabilities of the OLAP engine are not invoked.
calculating values locally may require the retrieval of large amounts of data if data is retrie

Method used

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  • System and method of multidimensional query results processing
  • System and method of multidimensional query results processing
  • System and method of multidimensional query results processing

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Embodiment Construction

FIG. 1 shows a typical data access environment 10 for processing data. Typically, data is stored in a database 11. A database server 12, e.g., structured query language (SQL) server, accesses the raw data stored in the database 11. A report server 12 is used to generate reports on the raw data and instruct the database server 12 to obtain information pertaining to the raw data in the database 11. An end user uses a client application 14, running on a client server, to facilitate report server 13 operations. Typically, a report server 13 has a query engine 15 for universal data access (UDA).

One embodiment of the present invention provides a mechanism by which the results of a multidimensional query are processed such that their format and contents accurately reflect the semantics of an entity / relationship (E / R) report specification. In addition, a mechanism may be provided such that tabular and cross-tabulated reports may be executed using an online analytical programming (OLAP) que...

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Abstract

A multidimensional query results processing system for translating output of an execution of a multidimensional query into a data result set that reflects the semantics of an entity/relationship schema report specification is provided. The system comprises a result set description generation module for producing a result set description that reflects the semantics of the report specification, a tabular row generation module for converting the results of the single multi-dimensional query into a collection of rows of data, a tabular summary level calculation module for calculating a summarization level of a row a data, a tabular header row generation module for producing a header row to include in the row of data, and a cross-tabulated result generation module for converting the results of the single multi-dimensional query into a result set that matches the semantics of the report specification.

Description

FIELD OF THE INVENTION The invention relates to a system and method of multidimensional query results processing. BACKGROUND OF THE INVENTION Data warehouses store data in one of two primary locations—relational databases and multi-dimensional, on-line analytical processing (OLAP) data sources. Typically, reporting tools that generate tabular / grouped list, or cross-tabulated reports work with relational databases, or extract data from an OLAP data source and process the data locally. This sort of product architecture is imposed due to the semantic differences between the relational and OLAP data models and the query languages used to access each type of data source. Whereas the relational query language, SQL, is well suited to producing tabular and grouped-list reports, multi-dimensional query languages are more suited to producing cross-tabulated reports for the purpose of analysis and exploration. Processing OLAP data locally to provide the data for a particular report introduc...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F17/30392G06F17/30955G06F17/30604G06F17/30592G06F16/288G06F16/2423G06F16/283G06F16/902
Inventor CUSHING, DAVIDCOSMA, MARIUSWARNER, NEILBEFFERT, HELMUT
Owner IBM CORP
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